Sir Richard Southwell (1502/3-1564) ~ some of these Holbein drawings (such as this one) have had subsequent paintings made from them and are housed in other Royal collections throughout Europe... I can't wait to track those down, because I love his work
Hans Holbein the Younger (1497/8-1543) - Sir Richard Southwell (1502/3-1564) Sir Richard Southwell (1502/3-1564). A bust length portrait facing three-quarters to the right, showing the sitter aged 33. This drawing is a preparatory study for painting in the Uffizi, Florence. Inscribed by the artist: Die augen ein wenig gelbatt (the eyes a little yellowish), and in chalk: [A]NNO ETTATIS SVA[E]/.33. Inscribed in an eighteenth-century hand at upper left: Rich: Southwell Knight.